{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "cell type", "protein", "cell line", "DNA"], "input": "The human myelomonocytic cell line U-937 as a model for studying alterations in steroid-induced monokine gene expression : marked enhancement of lipopolysaccharide-stimulated interleukin-1 beta messenger RNA levels by 1,25-dihydroxyvitamin D3 ."}
{"RNA": ["lipopolysaccharide-stimulated interleukin-1 beta messenger RNA"], "cell type": [], "protein": ["interleukin-1 beta"], "cell line": ["human myelomonocytic cell line U-937"], "DNA": []}